Open AccessProtein turnover in a psychrotrophic bacterium: Proteolytic activity in extracts of cells grown at different temperatures
Author(s) -
Potier Patrick,
Drevet Pascal,
Gounot AnnMonique,
Hipkiss Alan R.
Publication year - 1987
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1987.tb02280.x
Subject(s) - bacteria , arthrobacter , strain (injury) , biology , biochemistry , psychrotrophic bacteria , microbiology and biotechnology , chemistry , food science , enzyme , genetics , anatomy
The proteolytic activity in cell extracts of psychrotrophic bacterium Arthrobacter strain S 1 ‐55 has been compared after growth at 10°, 20° and 32°C. Extracts of cells grown at 32°C consistently possessed the greatest activity, and those from cells grown at 10°C the lowest when assayed at 10°, 20°, 32° and 37°C. The activity in extracts of 10°C‐grown cells was significantly more heat‐labile than that from the 20°C‐ and 32°C‐grown cells. It is suggested that growth at the high (32°C) and low (10°C) temperatures yields qualitative and quantitative differences in proteolytic activity in this organism.